cherry-pick vp8 integer overflow fixes

218b99892 vp8 encoder: fix some integer overflows
05f80a920 vp8,calc_pframe_target_size: fix integer overflow
7afb3a676 vp8_update_rate_correction_factors: fix integer overflow

Bug: b/189602769
Test: aosp_arm-eng aosp_arm64-eng aosp_x86-eng aosp_x86_64-eng
      aosp_crosshatch-userdebug compile
  aosp_sargo_hwasan-userdebug:
  - vts-tradefed run commandAndExit vts  \
      --include-filter VtsHalMediaC2V1_0TargetVideoEncTest \
      --module-arg \
      "VtsHalMediaC2V1_0TargetVideoEncTest:include-filter:*vp8*"
  - cts-tradefed run commandAndExit cts-dev \
      --include-filter CtsMediaTestCases \
      --module-arg "CtsMediaTestCases:include-filter:.*(?i:vp8)"
      (with many exclusions due to b/205221267)
Change-Id: I0c6fac7271f4ef0c2bb369543308cd7d579b4540
4 files changed